Thread 28707429

DCTs, were they actually bad or was it just inept drivers?

>>28707429 (OP)
Rotaries, were they actually bad or was it just inept drivers?

DCTs are expensive and autos have got so good they've become obsolete.

If VAG DCTs are any kind of reference for these:
>lugs engine half the time because economy
>janky in varying-speed traffic
>hesitates and shifts like shit after sensors clog from clutch dust and metal particle-contaminated "lifetime fluid"
>wears out mechatronics module, throws codes after 100,000 km
>closest specialized repair shop that can unfuck it is in the next country

Like all autos its usable only during the car's warranty period.

>>28707429 (OP)
i owned a ford focus with a dct. bought it brand new and traded it in after 30k miles because the transmission was about to blow the fuck up.

in the case of the focus, i think it was a combination of shitty mechanical design (leaking seals and undersized friction disks) and mentally retarded software (excessive clutch slips when accelerating from a dead stop.) i did the TCM reflash meme once and it didn't help.

when i was test driving the new car (mazda) the salesman asked me if i was having any problems with the focus, because he previously worked as a ford dealership mechanic. i lied and said no. kek.

>>28707441
>"can" do 100k with 2 stroke oil
My camry is about to hit 400k

>>28707429 (OP)
I work at audi and it's 100% the inept drivers. They don't understand what they bought and complain when they don't work like a standard automatic transmission

>>28707643
>Imagine, if you will, a transvestite automatic transmission LARPing as a manual, designed by women who have never mastered how to use a clutch pedal, and built by niggers.

>>28707711
What's an L.A.R.P.ing?

>>28707643
the focus is literally a mazda, bud

>>28707441
An apex seal replacement every 3-5 years to maintain longevity is like telling me I need to replace spark plugs on a transverse fwd dohc v6 every 30k miles.
Not gonna fucking happen.

They are good and based and fun
I suspect a lot of problems from normies who don't know any better and drive them like a normal torque converter auto

>>28707429 (OP)
Like every automatic since the dawn of time, it's shit and you're a ricer for even considering a slushbox, wrenchlet.

>>28707730
>if you constantly rebuild it they can last forever!!

>>28707767
Engine of Theseus

>>28707713
they only ever used the transmission in ford/volvo cars. the rest of the car was fine, it was the transmission that was a piece of fucking shit.

https://en.wikipedia.org/wiki/Ford_PowerShift_transmission

>>28707449
Most DCTs are essentially a manual transmission with an electromechanical controller, like planetary gear-based, torque converter autos.

>>28707804
DCTs have two input shafts instead of one, likewise the clutch is also different. Actual automated manuals existed briefly but were universally considered dogshit.

>>28707810
>DCTs have two input shafts instead of one, likewise the clutch is also different.
Yes, it's just a standard gearbox split in two.

>>28707810
>>28707810
i think it depends on the design. powershit transmission isn't radically different from an ordinary manual transmission (other than two input shafts and the weird shift fork arrangement.)

>>28707429 (OP)
works fine on my machine

>>28707730
Like BMW owners insisting that rod bearings are consumables.

>>28707429 (OP)
2 transmissions 1 gear box.

>>28707441
Hey that's my post
I also race with guys running FC and FD RX7s.
They do a engine overhaul every season.
But they are super efficient at it.

>>28707837
Just think of DCTs as two manuals glued together, one has even gears, the other one has odd

>>28707804
>electromechanical controller
that is the big issue, these things are not nearly as reliable as a good torque converter
i don't really see the point in a dct unless it's a high performance sports car that goes on track days

>>28708062
>i don't really see the point in a dct unless it's for performance
so you do see the point in dcts then

>>28708062
>that is the big issue, these things are not nearly as reliable as a good torque converter
You don't seem to understand what you're talking about.
The torque converter doesn't control gear changes, anon. It's just the coupler between the engine and input shaft of the transmission, just like the two clutch packs in a DCT. And just like a DCT, an automatic transmission with a torque converter has some type of controller, be it electromechanical or fully hydraulic, that controls gear changes.

>>28707429 (OP)
they're not quite outdated as manual transmission but still quite a step down from EV

>>28708347
EVs aren't cars, that's irrelevant

>>28707429 (OP)
My DQ250 worked like a dream for the 2 years I had my Golf. As long as they are religiously maintained the wet VAG units will last.

If you follow the maintenance schedule and change their fluid when you're supposed to, they will not break. If you understand that they share the internals and mannerisms of a manual transmission, you will have no reason to complain about how it drives. Most NPC drivers are inept and do neither of these things. If you're a DSG hater, you are an inept NPC driver.

>>28708683
>If you're a DSG hater, you are an inept NPC driver.
Bro you're literally shilling automatics lol, doesn't get more npc than that. Wrenchlet, ricer.

>>28708684
I like manuals, I like DSGs, and I like slushboxes that don't suck. If you're a manual "purist" and base your entire personality around fondling a knob for every gear change, you're just a reddit NPC and a faggot.

>>28708690
>I like slushboxes
Yea no shit kek, wrenchlet

>>28708692
>he thinks driving a manual makes him special
>he thinks turning a wrench on his shitbox makes him special
Congratulations, you have 2 things in common with a billion brown thirdies on this planet. Get a life, retard.

>Bro my heckin toy stories!!!
lel, kys nu-male ricer

>>28708709
>failing to understand an analogy
way to out yourself as an actual retard.

>>28708192
Well, yes, but the mechanical operation involved is so much less complex, with no clutch and planetary gears, versus a DSG with multiple clutches and essentially one mechatronic unit to control two gearboxes.
You hardly ever hear of TC automatics failing early because of this, but it's pretty much the biggest reason why DCTs fail.

>>28708692
The fuck does one's preference in his gearbox have to do with wrenching, retard?

>>28707429 (OP)
autos bad

>>28709558
>Well, yes, but the mechanical operation involved is so much less complex, with no clutch and planetary gears, versus a DSG with multiple clutches and essentially one mechatronic unit to control two gearboxes.
No, it very much isn't. Have you ever seen the valve body of a traditional automatic? Do you know how the planetary gearsets are engaged and disengaged in a traditional automatic? Protip: they have multiple clutch packs very similar to the two in a DCT.
A planetary gearset on its own is more complex than the gear pair of a DCT.

>>28709558
TC autos shit the bed all the time. It's only recently that they've got good. DCTs have multiple proprietary systems and relatively little development time, autos have most of the kinks ironed out by now. But since the 8HP era autos have got so good it just isn't worth putting more money in to DCTs.
The only area where I can see DCTs being used in future is heavy goods vehicles. The "autos" in those are mechanised manuals, TC autos just aren't strong enough.

>>28708556
Wasn't even a 1/4 mile dragstrip

https://youtu.be/HRYS5VWXZts

>>28707429 (OP)
Traditional torque convertor automatics are okay, but I don't like any other kind. I daily a manual transmission.

>>28709558
>You hardly ever hear of TC automatics failing early
They fail all the time. For many old cars the only surviving examples are the manual transmission models because all the autotragics died before 200k and the cars where sent to the yard. Entire cars are extinct because they were autotragic only and evey one of them was taken off the road by transmission failure.

Not strictly DCT related but I just have to let it out.

Fuck fixing autos. No work on the car comes close to being as miserable as that not even electrical work.

>>28710611
not watching that. porsche lost.
Cope sir fagsalot

>>28710635
It's mostly because the things that control the transmission shit the bed and the fluid never gets changed.
Give me a factory good automatic and I'll hand you back a still working unit with 300k miles on it, with only 4 fluid changes and a solenoid box rebuild.

You can't thrash a torque converter and expect it to last, though. Every pedal mash is taking some life out of it.

>>28707429 (OP)
I like my DCT, it's lasted 80k miles with no problems despite being a cursed Ford Powershift.
My favorite parts are the good pull feeling on accelerating from a stop, the strong engine braking, and the loud mechanical sounds when you turn the car off and the trans goes back to standby mode.
I do have to be careful of my gas/brake inputs to get it to keep power coming out of >90° turns, but that's part of the fun.

>>28707459
>lifetime fluid
Yeah, it lasts the lifetime of the transmission...

>>28709560
If anything, the more complex it is to maintain your shit the more wrench points you have.

>>28711494
>It's mostly because the things that control the transmission shit the bed and the fluid never gets changed.
Same with DCTs thoughever